9x^5-4x^2+7x-3 is the simplified version of your answer.
Answer:
9c^2
Step-by-step explanation:
The greatest common factor (GCF) is the largest positive integer that divides each of the integers. In this case we have the terms 207c^3 and 108c^2. Both terms can be divided by 9c^2 to get 9c^2(23c + 12). Notice that 23c + 12 can no longer be further simplified so 9c^2 is the GCF.
Charging: +2/min <span>percentage points.
Using: -5/min percentage points.
</span>Amount of time Famke used her phone: x
Amount of time Famke charge her phone: 2x
Famke gained 2x*(2/min)=x*(4/min) percentage points.
Over this period <span>her phone lost 10 percentage points→
x*(5/min)-x*(4/min)=10⇒x*(1/min)=10
x=10</span>
This means that she used her phone for 10 minutes and charged it for 20 minutes.
Answer:
6x − y = 1 -------(1)
4x − 3y = −11 ------(2)
(1)×3
18x - 3y =3 ------(3)
4x − 3y = −11 ------(2)
(3)+(2)
18x - 3y + ( 4x - 3y) = 3+(-11)
d. 4x − 3(−6x − 1) = −11 is the answer.
